When gemologists think of opals, play-of-color is almost certainly the first characteristic that comes to mind (figure 1). While play-of-color patterns can be extraordinarily beautiful under magnification, opals often contain a vast array of spectacular microscopic features in addition to this phenomenon. In continuing G&G’s series on inclusions, this chart will focus on natural, treated, synthetic, and imitation opals. READ MORE
Do YOU have some opal pics taken with a scope? Please post them so we can discuss what we see.
Post subject: Re: Inclusions:Natural, Treated, Synthetic, and Imitation Op
Posted: Mon Aug 19, 2019 11:00 pm
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Joined: Sun Oct 16, 2005 12:22 pm Posts: 21602 Location: San Francisco
Kewl, Stephen. I grabbed an opal I cut when I was a teenager....very fond memories associated. It was a scrap of black opal from Lightening Ridge given to me when I was 15. The opal is still in good shape (albeit a bit remedial, cutting wise...weight retention was clearly my priority):
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